Journal of Power Electronics

  • 제18권4호
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  • Pages.1154-1164
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  • 2018
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
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Magnetic-Field-Model and Circuit-Model Based Analysis of Three-Phase Magnetically Coupled Resonant Wireless Power Transfer Systems with Cylinder-Shaped Coils

  • Chen, Xuling (College of Mechanical and Electrical Eng., Nanjing University of Aeronautics and Astronautics) ;
  • Fu, Xiewei (College of Automation Eng., Nanjing University of Aeronautics and Astronautics) ;
  • Jiang, Chong (College of Automation Eng., Nanjing University of Aeronautics and Astronautics) ;
  • Pei, Cunhui (College of Mechanical and Electrical Eng., Nanjing University of Aeronautics and Astronautics) ;
  • Liu, Fuxin (College of Automation Eng., Nanjing University of Aeronautics and Astronautics)
  • 투고 : 2018.01.19
  • 심사 : 2018.03.13
  • 발행 : 2018.07.20
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초록

In single-phase magnetically coupled resonant (MCR) wireless power transfer (WPT) systems, the transfer characteristics, including the output power and transfer efficiency, are significantly influenced by the spatial scales of its coils. As a potential alternative, a three-phase MCR WPT system with cylinder-shaped coils that are excited in a voltage-fed manner has been proposed to satisfy the requirements of compact space. This system adopts a phase-shifted angle control scheme to generate a rotating magnetic field and to realize omnidirectional WPT that is immune to spatial scales. The magnetic field model and equivalent circuit models are built to holistically analyze the system characteristics under different angular misalignments. Research results show that the transfer characteristics can be improved by modulating the phase-shifted angle in each phase. Experiments have also been carried out to evaluate the accuracy of the theoretical analysis and to confirm the validity of the system modeling method.

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참고문헌

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